冷湖赛什腾山天文台址RFI测量

RFI Measurement at the Saishiteng Mountain Site in Lenghu

冷湖地区因干旱少雨、晴天数多、云量覆盖少等特点,引起了天文学家的高度关注。2018年开始在冷湖赛什腾山开展光学视宁度测量,几年测量结果表明赛什腾山光学台址特性可比肩世界著名光学台址。为进一步了解赛什腾天文台址的电磁环境特性,开展了无人值守无线电干扰RFI(Radio Frequency Interference)测量设备的研制以及在赛什腾山天文台址的电磁环境监测。文章主要介绍基于研制的0.1~18 GHz频段RFI测量系统,在冷湖赛什腾山天文台址规划D点(海拔4055 m)开展为期超过一年的RFI测量,以及测量结果的评估。

The Region of Lenghu has attracted great attention from astronomers because of its drought,less rain,more sunny days and less cloud cover.Recently,the measured results of the seeing at Saishiteng Mountain in Lenghu show that the site is comparable to the famous optical sites around the world in terms of optical band.In order to further understand the characteristics of electromagnetic environment of the Saishiteng Mountain site,unattended radio frequency interference(RFI)monitoring equipment was developed.This study mainly introduces the RFI measurement at point D(4055 m above sea level)of the Saishiteng Mountain in Lenghu based on the RFI measurement system at the frequency band from 0.1 GHz to 18 GHz,and the evaluation of the measurement results of the site for more than one year as well.